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Overlayed 15N HSQC spectra of N-Ac-d-Ala-d-Ala ligand-filled oligomeric and dimeric eremomycin. Letters d, t and o stand for NH amide groups in dimers, tetramers and octamers, respectively. Numbers denote sequential order. Asterisks (*) label amide NH groups belonging to the same monomeric unit within an asymmetric dimer building block. Not all signals are labeled because of signal overlap.
